Frame for filter-papers



.ARCI-IIE IVI. VAUGI-IAN, OIE RICHMOND, VIRGINIA.

FRAME ron FILTER-PAPERS.

Specification of Letters Patent.

Patented Nov. 18, 1919.

Application led May 13, 11919. Serial No. 296,949.

To @ZZ ywhom t may concern:

Be it known that I, ARCHIE M. VAUGHEN, a citizen of the United States, anda resident lof Richmond, 'in' the County of Henrico and citate of Virginia, have invented a new and Improved Frame for Filter-Papers, of which the following is a full, clear, a-nd exact description.

This invention relates toV a frame for properly Shaping and holding filter paper so that the same may be utilized.

The invention primarily aims to provide a device of this nature which shall present considerable improvement over the construction embodied` in my Patent No. 32,936, in that the present device includes aconstruction which is far simpler than the construction embraced in the patent referred to, .conseoluently, resulting in a far more economical manufacture. f

The device further aims to provide a holder for filter paper in which the paper may be applied in the form of a blank, and upon the grouping together of the holding frame the paper will automatically assume the position required for the proper filtration of fiuids.

Having these objects in mind, reference is had to the accompanying` sheet of drawings which illustrates one practical embodiment of my invention, and in which- Figure 1 illustrates the outer part of the frame;

Fig. 2, the inner part of the same;

Fig. 3 is a sectional side view of my frame with the parts assembled and a filter paper in applied position; and

Fig. 4 is a sectional view taken along the line 4 4 of Fig. 3.

In these various views like reference numerals designate similar parts, and the reference numeral l indicates more particularly the paper acting as a filter, which is adapted to nest within the outer part of the frame, such outer part including a ring 2 from which extends upwardly yrods 3 and an upper, star-shaped part 4 to the joint 5 of whose adjacent points the upper ends of the rods 3 are secured.

The paper I is then pressed into and retained in this position in the inner part of the frame, which includes a lower ring G and an upper polygonal part 7 to whose points there are secured rods 8 which extend downwardly and have their lower ends scoured to the ring 6.

In connection with the rods 3 and S respectively to the rings 2 and 6, as well as the parts 4 and 7, these rods are merely bent around 'these portions so as to form a rigid structure. However, if it is desired, this connection in all instances may be soldered, so that no possibility of loosening of the parts will exist. It is further to be noted that these rods are bent inwardly around their retaining members in the inner frame, and outwardly in the outer frame, as indicated by ,the reference numerals 9 and l() respectively.

In practice it will be noted that the paper l is simply a blank piece of filtering paper, which may take any shape, although the same is preferably cut circular. This paper simply has its center portion pressed by hand, or other suitable means, so that it firmly rests within the outer part of the frame. The inner part of the frame is then pushed into position, and the ring 6 will engage the upper surface of the paper 1 and force the same downwardly so that this paper is clamped between the outer and inner frames, this final position being illustrated in Figs. 3 and 4.

It will be understood that by reason of the star-shaped part of the frame, the paper will be properly folded to afford a maximum of filtering surface as against the usual filtering papers, which are either folded by hand, or by machine, so as to form a finished cone where not more than one-third of the complete area of the paper blank used is utilized for filtering purposes.

Further, by virtue of the bending inward of the rods 3 and an outward bending of the rods 8, the filter paper l will be less liable to be torn by any rough edges on the ends of the wires.

It is to be appreciated that various modifications may be made in this structure without in the least departing from the scope of my invention.

Having now described my invention, what I desire to claim is:

1. A lter-paper holder, including an outer frame comprising a lower ring, an upper part Vand rods extending between such lower ring and such upper part; and an inner frame including a lower ring, an upper part and rods extending between such ring and upper part, such frames being entirely inplliependent and separable one from the ot er.

A lilter-paper holder, including an outer frame comprising a lower ring, a starshaped part and rods extending between such lower ring and such star-shaped part; and an inner franie including e lower ring, an upper part and rods extending between 'such ring and upper part, such frames being entirely independent and separable one .from the other.

3. A lilter-paper holder, including an outer traine comprising a lower ring and an upper part land rods extending between such lower ring and such upper part, and an inner frame including a lower ring, a polygonal-shaped part and rods extending between such ring and polygonal-shaped part, such frames being entirely independent and seperable one from the other.

ll. A filter-paper holder, including an outer frame comprising a ring, a star-sha.ped upper part and rods extending between such rin g and ster-shaped upper part, and an indner frame including` a ring, a polygonalshaped pa-rt and rodsextending between such ring and polygonal-shaped part, both ot such trainee `being entirely independent and separable one from the other.

5. A filter-paper holder including an outer frame comprising a ring, a star-shaped part and rods` extending between such ring and the joint between the points oit' the starshaped part; and an inner fra-nie including 2L ring, an upper part and rods extending between such ring und upper part, both of suoli frames being entirely separable and independent one from the other.

G. A filter-paper holder, including an inner and an outer frame, the outer franie comprising a ring, a star-shaped part and rods extending between such ring and starshaped part; the inner fraine including a ring and a polygonal-shaped part and rods extending between such ring and the points of the polygonal-shaped pert,.both or' such frame-s being entirely independent and separable one from the other.

7 A filter-paper holder, including an inner and an outer frame between which is adapted to be clamped the [ilter paper, the outer freine including upper and lower parts and rods haring their ends bent outwardly around and extending between such upper and lower parts, the inner frame including upper and lower parts and rods having their ends bent around and extending between such upper and lower parts.

ARCI-IIE M. VAUGHA N. 

